Generally with the ford MAF based load calculation, a load of 2 is pretty close to 1 atmosphere (15 ish psi) of boost. Actual value depends on engine VE, but ball park idea. Above that, you are out of table. This means the 2.0 load row needs to be tuned for your max intended boost, and when "pedaling" it or running less timing will just be a little lower than it needs to be. Not necessarily a problem, but something to be aware of.